// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/public/renderer/render_frame_observer.h"

#include "content/renderer/render_frame_impl.h"

using blink::WebFrame;

namespace content {

RenderFrameObserver::RenderFrameObserver(RenderFrame* render_frame)
    : render_frame_(render_frame)
    , routing_id_(MSG_ROUTING_NONE)
{
    // |render_frame| can be NULL on unit testing.
    if (render_frame) {
        RenderFrameImpl* impl = static_cast<RenderFrameImpl*>(render_frame);
        routing_id_ = impl->GetRoutingID();
        DCHECK_NE(routing_id_, MSG_ROUTING_NONE);
        impl->AddObserver(this);
    }
}

RenderFrameObserver::~RenderFrameObserver()
{
    if (render_frame_) {
        RenderFrameImpl* impl = static_cast<RenderFrameImpl*>(render_frame_);
        impl->RemoveObserver(this);
    }
}

bool RenderFrameObserver::OnMessageReceived(const IPC::Message& message)
{
    return false;
}

bool RenderFrameObserver::Send(IPC::Message* message)
{
    if (render_frame_)
        return render_frame_->Send(message);

    delete message;
    return false;
}

RenderFrame* RenderFrameObserver::render_frame() const
{
    return render_frame_;
}

void RenderFrameObserver::RenderFrameGone()
{
    render_frame_ = NULL;
}

} // namespace content
